Looking carefully on the artworks of different countries, most or all of them reflect the culture of the country, the landscape and somehow depict their history in a very emotional way. Those artworks are now printed via canvas print, art print and even as poster. You can also set the poster or images you print into a framed art to protect the edges of the paper.
In Spain, the main focus of the poster arts are their structural buildings which are constructed incredibly and are world famous and also the culture they have. As we all know, Spain is one of the countries who gained so many territories during the colonial era and spread their culture to every country they conquered. Spain also learned from the countries it has conquered and tried to adopt some of them with their culture which led to a more unique culture which is now seen in poster arts and many photographs you can find in Spain.
One structural landmark image in Spain you can put into your place is the La Sagrada Familia at night in Barcelona, Catalonia, Spain. The place is very elegant especially at night view so you may want it to be placed in dark colored room to get emphasized. Another one is the Plaza de Espania in Sevilla or the Plaza Major in Madrid. No matter which one you choose, they all make for a great poster.